Powder Sentence Examples
They shall get no powder, if I can help it.
It is a brown powder which is readily decomposed by boiling water.
I can only assume the powder you found in my pocket was powdered sugar.
It is a dark brown powder.
When the king's soldiers heard about this powder, they made up their minds to go out and get it for themselves.
Paramide is a white amorphous powder, insoluble in water and alcohol.
White lead is an earthy, amorphous powder.
Silver chromate, Ag2Cr04, is a dark red amorphous powder obtained when silver nitrate is precipitated by an alkaline chromate.
Scrap mica is ground to powder or used in the manufacture of micanite.
While he also prevents interruption of the operation by means of water-jackets, he uses hot-blast, and produces, besides metallic lead, large volumes of lead fumes which are drawn off by fans through long cooling tubes, and then forced through suspended bags which filter off the dust, called "blue powder."
AdvertisementThe distillation of 1000 lb charge lasts 5-6 hours, requires 500-600 lb coke or 30 gallons reduced oil, and yields about to% metallic zinc and I% blue powder - a mixture of finely-divided metallic zinc and zinc oxide.
Lead sesquioxide, Pb203, is obtained as a reddish-yellow amorphous powder by carefully adding sodium hypochlorite to a cold potash solution of lead oxide, or by adding very dilute ammonia to a solution of red lead in acetic acid.
Red lead or triplumbic tetroxide, Pb304, is a scarlet crystalline powder of specific gravity 8.6-9.1, obtained by roasting very finely divided pure massicot or lead carbonate; the brightness of the colour depends in a great measure on the roasting.
Lead fluoride, PbF2, is a white powder obtained by precipitating a lead salt with a soluble fluoride; it is sparingly soluble in water but readily dissolves in hydrochloric and nitric acids.
When heated they liquefy; and if the heating be continued, the water of crystallization is driven off, the salt froths and^swells, and at last an amorphous powder remains.
AdvertisementDuring this exposure it is kept continually moistened with water, so that it ultimately falls to a very fine powder.
This powder is then lixiviated with hot water, the liquor decanted, and the alum allowed to crystallize.
As obtained by the reduction of the chloride, it is a steel grey powder of specific gravity 7 06.
Columbium hydride, CbH, is obtained as a greyish metallic powder, when the double fluoride, CbF 5, 2 KF, is reduced with sodium.
It is a white amorphous infusible powder, which when strongly heated in sulphuretted hydrogen, yields an oxysulphide.
AdvertisementFrom this group came the young Bosnian Serb students Princip, Cabrinovic, Graben and others, who murdered the Archduke Francis Ferdinand and the Duchess of Hohenberg at Sarajevo on June 28 1914, and thus lit a spark in the European powder magazine.
Uranous Compounds.-Uranium dioxide, UO 2 (Berzelius's metal), is a brown to copper-coloured powder, obtained by heating U308 or uranyl oxalate in hydrogen.
By electrolysis it yields uranium dioxide as a pyrophoric powder, and peruranic hydroxide, U04.2H20, when treated with hydrogen peroxide.
Exposed to air this mixture is oxidized to the pigment uranium red, U6(NH4)2S09, which is a fine blood-coloured amorphous powder.
The veinstuff is broken small either by hand or in rock-breakers, and stamped to fine powder in stamp mills, which are practically large mechanically-worked pestles and mortars, the stamp proper weighing from 500 to moo lb.
AdvertisementStannous sulphide, SnS, is obtained as a lead-grey mass by heating tin with sulphur, and as a brown precipitate by adding sulphuretted hydrogen to a stannous solution; this is soluble in ammonium polysulphide, and dries to a black powder.
Stannic sulphide, SnS 2, is obtained by heating a mixture of tin (or, better, tin amalgam), sulphur and sal-ammoniac in proper proportions in the beautiful form of aurum musivum (mosaic gold) - a solid consisting of golden yellow, metallic lustrous scales, and used chiefly as a yellow "bronze" for plaster-of-Paris statuettes, &c. The yellow precipitate of stannic sulphide obtained by adding sulphuretted hydrogen to a stannic solution readily dissolves in solutions of the alkaline sulphides to form thiostannates of the formula M 2 SnS 31 the free acid, H2SnS3, may be obtained as an almost black powder by drying the yellow precipitate formed when hydrochloric acid is added to a solution of a thiostannate.
Brewing, brickmaking and the manufacture of cement are also carried on, and there are several large powder mills in the vicinity.
One grain of saffron rubbed to powder with sugar and a little water imparts a distinctly yellow tint to ten gallons of water.
The grateful perfumed powder abir or rand y is composed either of rice, flour, mango bark or deodar wood, camphor and aniseed, or of sandalwood or wood aloes, and zerumbet, zedoary, rose flowers, camphor and civet.
The principal item in mining cost is that of labour, which is expended chiefly in breaking down the mineral, either by the use of hand tools or with the aid of powder.
The ore is mined in the ordinary way, by pick and shovel if soft, or by the aid of powder if necessary, and the funnel-shaped bottom of the pit is maintained at such an angle that little or no shovelling is required to bring the excavated material to the shaft.
In mining operations explosives are used on a large scale and the powder gases contain large quantities of the very poisonous gas, carbon monoxide, a small percentage of which may cause death, and even a minute percentage of which in the air will seriously affect the health.
The political convulsions of Italy in 1799 brought Breislak to Paris, where he remained until 1802, when, being appointed inspector of the saltpetre and powder manufactories near Milan, he removed to that city.
It is a yellow powder, soluble in hot water.
Among manufactures are foundry and machine-shop products, powder, stoves, furniture, hosiery, &c. The borough owns the water-works.
These " weathering " agents not only act upon stones of buildings, but upon rocks of all kinds, reducing them sooner or later into a more or less fine powder.
This substance absorbs and combines with water very greedily, at the same time becoming very hot, and falling into a fine dry powder,' calcium hydroxide or slaked lime, which when left in the open slowly combines with the carbon dioxide of the air and becomes calcium carbonate, from which we began.
The quicklime should be placed in small heaps and covered with soil if possible until it is slacked and the lumps have fallen into powder, after which it may be spread and harrowed in.
Great care is necessary to prevent the heaps from becoming too hot, in which case the clay becomes baked into hard lumps of brick-like material which cannot be broken up. With careful management, however, the clay dries and bakes, becoming slowly converted into lumps which readily crumble into a fine powder, in which state it is spread over and worked into the land at the rate of 40 loads per acre.
It is a white powder, and is insoluble in water.
In these arrangements, which were similar if not identical, the furnace charge was crushed to a fine powder and passed through two or more electric arcs in succession.
Columbium oxysulphide, CbOS 3, is obtained as a dark bronze coloured powder when the pentoxide is heated to a white heat in a current of carbon bisulphide vapour; or by gently heating the oxychloride in a current of sulphuretted hydrogen.
The metal thus produced formed a dark brown amorphous powder resembling iron as obtained by the reduction of its oxide in hydrogen.
Ti 3 N 4 is a copper-coloured powder obtained by heating the ammonio-chloride TiC1 4.4NH 3 in ammonia.
TiN 2 is a dark blue powder obtained when the oxide is ignited in an atmosphere of ammonia; while TiN is obtained as a bronze yellow mass as hard as the diamond by heating the oxide in an atmosphere of nitrogen in the electric furnace.
Titanium monoxide, TiO, is obtained as black prismatic crystals by heating the dioxide in the electric furnace, or with magnesium powder.
When ignited in a current of hydrogen it yields tiianium trifluoride, TiF 3, as a violet powder.
Titanium dichloride, TiC1 21 obtained by passing hydrogen over the trichloride at a dull red heat, is a very hygroscopic brown powder which inflames when exposed to air, and energetically decomposes water.
It is a white amorphous powder which resembles lime in its general character.
Evidently the idea of the great Yokoya experts, the originators of the style, was to break away from the somewhat formal monotony of ordinary engraving, where each line performs exactly the same function, and to convert the chisel into an artists i It is first boiled in a lye obtained by lixiviating wood ashes; it is next polished with charcoal powder; then immersed in plum vinegar and salt; then washed with weak lye and placed in a, tub of water to remove all traces of alkali, the final step being to digest in a boiling solution of copper sulphate, verdigris and water.
Baker City lies in the valley of Powder river, at the base of the Blue Mountains, and has an elevation of about 3440 ft.
It is a white crystalline powder which is almost insoluble in cold water.
The word "alcohol" is of Arabic origin, being derived from the particle al and the word kohl, an impalpable powder used in the East for painting the eyebrows.
In 1609 a charter of incorporation provided for a mayor, recorder, six capital burgesses and seventeen assistants and courts of record and pie powder.
It is insoluble in hydrochloric, nitric and sulphuric acids, but dissolves in aqua regia - a mixture of hydrochloric and nitric acids - and when very finely divided in a heated mixture of strong sulphuric acid and a little nitric acid; dilution with water, however, precipitates the metal as a violet or brown powder from this solution.
It forms a dark-violet precipitate which dries to a greyish-violet powder.
Auric chloride, or gold trichloride, AuC1 3, is a dark rubyred or reddish-brown, crystalline, deliquescent powder obtained by dissolving the metal in aqua regia.
Aurous iodide, Aul, is a light-yellow, sparingly soluble powder obtained, together with free iodine, by adding potassium iodide to auric chloride; auric iodide, Au13, is formed as a dark-green powder at the same time, but it readily decomposes to aurous iodide and iodine.
Aurous sulphide, Au 2 S, is a brownishblack powder formed by passing sulphuretted hydrogen into a solution of potassium aurocyanide and then acidifying.
In all cases the quartz or other vein stuff must be reduced to a very fine powder as a preliminary to further operations.
There have also been introduced processes in which the chlorine is generated in the chloridizing vat, the reagents used being dilute solutions of bleaching powder and an acid.
Elsner recognized, in 1846, the part played by the atmosphere, and in 1879 Dixon showed that bleaching powder, manganese dioxide, and other oxidizing agents, facilitated the solution.
Thus obtained it is a yellow powder, soluble in the mineral acids to form soluble salts, which are readily precipitated as basic salts when the solution is diluted.
The hydrate, Bi(OH) 3 i is obtained as a white powder by adding potash to a solution of a bismuth salt.
Bismuth trifluoride, BiF3, a white powder, bismuth tribromide, BiBr 3, golden yellow crystals, bismuth iodide, Bi13, greyish-black crystals, are also known.
Bismuth sulphate, B12(S04)3, is obtained as a white powder by dissolving the metal or sulphide in concentrated sulphuric acid.
The physical properties of the powder also give it a mild astringent action.
In 1793 large cavalry barracks were erected upon it, and it is also the site of extensive powder mills.
Tantalum pentoxide, Ta205, is a white amorphous infusible powder, or it may be crystallized by strongly heating, or by fusing with boron trioxide or microcosmic salt.
Sometimes it is almost pasty, and crumbles to powder when dried, so as to be susceptible of use as a pigment, forming the colour known as Cologne earth, which resembles umber or sepia.
There are three substances which can be relied on more or less to remove this compound, and the gas to be purified may be passed either through acid copper salts, through bleaching powder or through chromic acid.
Lunge, who recommends the use of bleaching powder.
The chloride, SmCl 2, is a brown crystalline powder which is decomposed by water with liberation of hydrogen and the formation of the oxide, Sm 2 O 3, and an oxychloride, SmOC1.
Smokeless powder also made rapid firing a possibility and a necessity.
The protoxide, OsO, is obtained as a dark grey insoluble powder when osmium sulphite is heated with sodium carbonate in a current of carbon dioxide.
Osmium dichloride, OsC1 21 is obtained as a dark coloured powder when the metal is heated in a current of chlorine.
A first-class arsenal, which can renew the materiel and equipment of a large army, embraces a gun factory, carriage factory, laboratory and small-arms ammunition factory, small-arms factory, harness, saddlery and tent factories, and a powder factory; in addition it must possess great store-houses.
Under B - Gun factory, carriage factory, laboratory, small-arms factory, harness and tent factory, powder factory, &c. In a secondclass arsenal there would be workshops instead of these factories.
The metal was obtained by Berzelius as an iron-grey powder by heating potassium zirconofluoride with metallic potassium.
For its extraction from zircon the mineral is heated and quenched in water to render it brittle, and then reduced to a fine powder, which is fused with three to four parts of acid potassium fluoride in a platinum crucible.
He was certain that war with Spain was inevitable, and he did much to prepare the navy for hostilities, framing an important personnel bill, collecting ammunition, getting large appropriations for powder and ammunition used in improving the marksmanship of the navy by gunnery practice, buying transports and securing the distribution of ships and supplies (especially in the Pacific) in such a way that, when hostilities were declared, American naval victories would be assured.
He was arrested on the spot, and when his lodgings were searched a quantity of powder and shot was found, with the rules of a secret society, called" Young England,"whose members were pledged to meet," carrying swords and pistols and wearing crape masks."These discoveries raised the surmise that Oxford was the tool of a widespread Chartist conspiracy - or, as the Irish pretended, of a conspiracy of Orangemen to set the duke of Cumberland on the throne; and while these delusions were fresh, they threw well-disposed persons into a paroxysm of loyalty.
The coal is all in the form of brown lignite and is not very valuable as a fuel, as it soon crumbles into a fine powder on being exposed to air.
They bought practically all of what is now Essex county from the Indians for "fifty double hands of powder, one hundred bars of lead, twenty axes, twenty coats, ten guns, twenty pistols, ten kettles, ten swords, four blankets, four barrels of beer, ten pairs of breeches, fifty knives, twenty horses, eighteen hundred and fifty fathoms of wampum, six ankers of liquor (or something equivalent), and three troopers' coats."
Calcium fluoride, CaF2, constitutes the mineral fluor-spar, and is prepared artificially as an insoluble white powder by precipitating a solution of calcium chloride with a soluble fluoride.
Calcium monosulphide, CaS, a white amorphous powder, sparingly soluble in water, is formed by heating the sulphate with charcoal, or by heating lime in a current of sulphuretted hydrogen.
The normal phosphate, (NH4)3P04,is obtained as a crystalline powder, on mixing concentrated solutions of ammonia and phosphoric acid, or on the addition of excess of ammonia to the acid phosphate (NH 4) 2 HPO 4.
Sal ammoniac (ammonium chloride, British and United States pharmacopoeiae) as used in medicine is a white crystalline odourless powder having a saline taste.
The anhydrous salt is a colourless powder or porous mass, having an alkaline taste and reaction.
The calculation of the stress in the various parts of the gun due to the powder pressure is dealt with in the article Ordnance.
Interior Ballistics The investigation of the relations connecting the pressure, volume and temperature of the powder-gas inside the bore of the gun, of the work realized by the expansion of the powder, of the V FIG.
As a preliminary step to the determination of the pressure in the bore of a gun, it is desirable to measure the pressure obtained by exploding a charge of powder in a closed vessel, varying the weight of the charge and thereby the density of the powder-gas.
Thus if a charge of P lb of powder is placed in a chamber of volume C cub.
Carbon powder compressed into a rod was slowly passed through a tube in which it was subjected to the action of one or more electric arcs.
It is a dark yellow powder, which fuses at a high temperature, the liquid on cooling depositing shining tabular crystals; at a white heat it loses oxygen and yields the monoxide.
When hydrochloric acid gas is passed into the solution the salt is completely precipitated as a fine powder.
Later magnesium powder or ribbon was used, being set off in the same way.
The peroxide, Pr 4 O 7, forms a dark brown powder, and is obtained by ignition of the oxalate or nitrate.
In 1778 he proposed a new method of making calomel and powder of algaroth, and he got molybdic acid from mineral molybdaena nitens which he carefully distinguished from ordinary molybdena (plumbago or black lead of commerce).
If the powder of a transparent substance is immersed in a liquid of the same refractive index, the mixture becomes transparent and a measurement of the refractive index of the liquid gives the refractivity of the powder.
Christiansen found, in an investigation of this kind, that the refractivity of the liquid could only be got to match that of the powder for mono-chromatic light, and that, if white light were used, brilliant colour effects were obtained, which varied in a remarkable manner when small changes occurred in the refractive index of the liquid.
These effects are due to the difference in dispersive power of the powder and the liquid.
It is a dark blue powder with a marked coppery lustre.
During the Civil War Augusta was the seat of extensive military factories, the tall chimney of the Confederate powder mills still standing as a memorial.
He had just arrived on the spot and met a man going to fetch powder to blow in a door; instead Hodson, with his usual recklessness, rushed into the doorway and was shot.
On Powder House Hill (originally Quarry Hill), in Nathan Tufts Park, there still stands an interesting old slate-stone powder house, a circular building, 30 ft.
The fire reached the powder and the flagship blew up, sending the Capitan Pasha and 2000 Turks into the air.
Wohler reduced the sesquioxide by zinc, and obtained a shining green powder of specific gravity 6.81, which tarnished in air and dissolved in hydrochloric acid and warm dilute sulphuric acid, but was unacted upon by concentrated nitric acid.
In the amorphous state it is a dull green, almost infusible powder, but as obtained from chromium oxychloride it is deposited in the form of dark green hexagonal crystals of specific gravity 5 2.
Chromic sulphide, Cr2S3, results on heating chromium and sulphur or on strongly heating the trioxide in a current of sulphuretted hydrogen; it forms a dark green crystalline powder, and on ignition gives the sesquioxide.
By passing ammonia over heated chromic chloride, the nitride, CrN, is formed as a brownish powder.
It is an orange crystalline powder which is soluble in water, forming a yellow solution.
It is precipitated from hot solutions by alcohol, falling as a white powder.
The yarns are chiefly used by manufacturers of powder bags.
The prosperity of the town depends on the important works in its vicinity, including powder works, paper mills, and engineering, iron, chemical and cement works.
It is a non-volatile and almost infusible white powder, which slowly absorbs moisture and carbon dioxide from air, and is readily soluble in dilute acids.
It is a white amorphous powder, readily soluble in acids.
In the southern part of the city is a United States navy yard and station, officially the Norfolk Yard (the second largest in the country), of about 450 acres, with three immense dry docks, machine shops, warehouses, travelling and water cranes, a training station, torpedoboat headquarters, a powder plant (20 acres), a naval magazine, a naval hospital and the distribution headquarters of the United State Marine Corps.
To ensure this being properly done, the lumps of lime should be broken up small, and enough water to slake them should be added, the lime then being allowed to rest for about forty-eight hours, when the water changes the particles of quicklime to hydrate of lime, and breaks up the hard lumps into a powder.
They may be dried so thoroughly that they can easily be reduced to powder yet their vitality is not destroyed but only suspended; on being supplied with water they absorb it rapidly by their general surface and renew their activity.
The substances used as tests in these reactions are caustic potash and calcium hypochlorite; the former being the substance dissolved in an equal weight of water and the latter a saturated extract of bleaching powder in water.
From their supposed aptitude to imbibe and retain odours, their powder was the basis of various perfumes, such as the celebrated " Poudre de Cypre " of the hairdressers, but their employment in this respect has long since been abandoned.
One of the most useful nutritious species is Cetraria islandica, " Iceland moss," which, after being deprived of its bitterness by boiling in water, is reduced to a powder and made into cakes, or is boiled and eaten with milk by the poor Icelander, whose sole food it often constitutes.
Contaminated as it was with potassium and with platinum from the crucible, the metal formed a grey powder and was far from pure; but in 1845 he improved his process and succeeded in producing metallic globules wherewith he examined its chief properties, and prepared several compounds hitherto unknown.
Alumina is obtained as a white amorphous powder by heating aluminium hydroxide.
This powder, provided that it has not been too' strongly ignited, is soluble in strong acids; by ignition it becomes denser and nearly as hard as corundum; it fuses in the oxyhydrogen flame or electric arc, and on cooling it assumes a crystalline form closely resembling the mineral species.
Thus Abraham Danzig celebrated in this manner his escape from the results of an explosion of a powder magazine at Wilna in 1804.
Butler approached the fort on the 10th of December 1864; on the 24th the "Louisiana," loaded with 215 tons of powder, was exploded 400 yds.
Such ferns as Gymnogrammes, which have their surface covered with golden or silver powder, and certain species of scaly-surfaced Cheilanthes and Nothochlaena, as they cannot bear to have their fronds wetted, should never be syringed; but most other ferns may have a moderate sprinkling occasionally (not necessarily daily), and as the season advances, sufficient air and light must be admitted to solidify the tissues.
Destroy aphides and other insects by syringing with tobacco water, or by fumigating, or by dusting with tobacco powder.
The cushions were greased and the amalgam in a state of powder spread over them.
In the preparation of chloroform by the action of bleaching powder on ethyl alcohol it is probable that the alcohol is ..rst oxidized to acetaldehyde, which is subsequently chlorinated and then decomposed.
In the Carboniferous Limestone series, the purer kinds of limestone are used for the manufacture of lime, bleaching powder and similar products, also as a flux in the smelting of iron; some of the less pure varieties are used in making cement.
In 1827 he obtained metallic aluminium as a fine powder, and in 1845 improved methods enabled him to get it in fully metallic globules.
There are numerous preparations, patent and pharmacopeial, their composition being extremely varied, so that, unless one has reason to be certain of any particular preparation, it is almost better to use only the dried leaves themselves in the form of a powder (dose a-z grains).
In 1380-1381 at an inquisition into the liberties of Corfe Castle, the jurors declared that from time immemorial the constable and his steward had held all pleas and amerciaments except those of the mayor's court of Pie Powder, but that the town had judgment by fire, water and combat.
The streak, or colour of the powder, is brownish or light yellow, rarely white.
Lanthanum oxide, La203, is a white powder obtained by burning the metal in oxygen, or by ignition of the carbonate, nitrate or sulphate.
Lanthanum hydroxide, La(OH) 3, is a white amorphous powder formed by precipitating lanthanum salts by potassium hydroxide.
Lanthanum sulphide, La 2 S 3, is a yellow powder, obtained when the oxide is heated in the vapour of carbon bisulphide.
Beryllium oxide, beryllia or glucina, BeO, is a very hard white powder which can be melted and distilled in the electric furnace, when it condenses in the form of minute hexagonal crystals.
Probably the first lorming was done by chipping and hammer-dressing, as in later times; the final facing of the hard stones was doubtless by sieans of emery in block or powder, as emery grinding blocks tre found.
A similar method was common for circular holes, which were cut by a tube, either with powder or fixed teeth.
The same afternoon the guards in the streets and on the ramparts were doubled; on the following morning the gates of the city were closed, powder and bullets were distributed among the city train-bands, who were bidden to be in readiness when the alarm bell called them, and cavalry was massed on the environs of the city.
At the upper end the raw material is fed in either as a dry powder or as a slurry; at the lower end is a powerful burner.
Thallous bromide, TIBr, is a light yellow crystalline powder; it is formed analogously to the chloride.
Thallic oxide, T1203, is obtained as a dark reddish powder, insoluble in water and alkalis, by plunging molten thallium into oxygen, or by electrolysing water, using a thallium anode.
On the left the prince's men could not load their pieces, their powder being ruined by the tempestuous rain.
It is a dark coloured powder of specific gravity 5.09.
It is a reddish-brown powder, which when heated with hydrochloric acid yields chlorine.
It is a dark brown powder, which reddens litmus.
The wood affected shrivels up and becomes reduced after a time to a fine brown powder.
In this way the disease is spread rapidly, continually eating into the timber, which is first rendered brittle, and then reduced to powder.
It is a bluish-green powder, which on exposure rapidly combines with the oxygen of the air.
It is a white powder of specific gravity 3.912, easily soluble in cold water.
The dried or " finished " soda-ash is ground to a pretty fine powder and is packed into wooden casks or " tierces," holding from io to about 20 cwt.
A week later some hundreds of insurgents attacked the powder magazine at San Juan del Monte, but were completely routed.
From Morphinae Acetas, a white soluble amorphous powder, is made Liquor Morphinae Acetatis, strength 1% or 44 grs.
From Morphinae Tartras, a white crystalline powder, are prepared, Injectio Morphinae Hypodermica, containing 5% of morphine tartrate, and Liquor Morphinae Tartratis.
Morphinae Sulphatis is not official in the British Pharmacopeia but is official in the United States, the U.S.P. Trochisci Morphinae et Ipecacuanhae and Pulvis Morphinae Cornpositus (Tully's powder) being made from it.
His services to industry included his improvements in the processes for the manufacture of sulphuric acid (1818) and oxalic acid (1829); methods of estimating the amount of real alkali in potash and soda by the volume of standard acid required for neutralization, and for estimating the available chlorine in bleaching powder by a solution of arsenious acid; directions for the use of the centesimal alcoholometer published in 1824 and specially commended by the Institute; and the elaboration of a method of assaying silver by a standard solution of common salt, a volume on which was published in 1833.
It is an amorphous white powder; but it may also be obtained in crystals isomorphous with cassiterite by heating the amorphous form with borax to a very high temperature.
Thorium fluoride, ThF 4, is obtained as a heavy white insoluble powder by dissolving the hydrate in hydrofluoric acid and evaporating.
Potassium thorofluoride, K2ThF6 4H20, is a heavy black powder formed by boiling the hydroxide with potassium fluoride and hydrofluoric acid.
It is a green powder which becomes yellow when heated.
The hydroxide, Ni(OH) 2, is obtained in the form of a greenish amorphous powder when nickel salts are precipitated by the caustic alkalis.
It is a black powder, the composition of which is never quite definite, but approximates to the formula given above.
Nickel sulphate, NiSO 4, is obtained anhydrous as a yellow powder when any of its hydrates are heated.
In this method tremendous blasts of powder, sometimes twenty-five or even fifty tons, were used to loosen the gravel, which was then acted on by the jet of water thrown from the " pipes."
The colour is brass-yellow, and the lustre metallic; the streak, or colour of the powder, is greenish-black.
In the form of a powder, it is obtained by reducing the oxide with zinc and extracting with soda, or by dissolving out the manganese from its alloys with tungsten.
Tungsten dioxide, W02, formed on reducing the trioxide by hydrogen at a red heat or a mixture of the trioxide and hydrochloric acid with zinc, or by decomposing the tetrachloride with water, is a brown strongly pyrophoric powder, which must be cooled in hydrogen before being brought into contact with air.
It is a canary-yellow powder, which becomes a dark orange on heating; the original colour is regained on cooling.
The dichloride, WC1 2, is an amorphous grey powder obtained by reducing the hexachloride at a high temperature in hydrogen, or, better, by heating the tetrachloride in a current of carbon dioxide.
This gives the tetrachloride as a greyishbrown crystalline powder.
At a high temperature hydrogen reduces it to the metal partly in the form of a black pyrophoric powder.
It forms black lustrous crystals, or when quickly condensed, a dark green crystalline powder.
The dibromide, WBr 2, is a non-volatile bluishblack powder obtained by reducing the pentabromide with hydrogen.
The dioxybromide forms light red crystals or a yellow powder; it volatilizes at a red heat, and is not acted upon by water.
When dry it is a black mass which yields a liver-coloured powder.
A nitride, W2N3, is obtained as a black powder by acting with ammonia on the oxytetrachloride or hexachloride; it is insoluble in sodium hydroxide, nitric and dilute sulphuric acids; strong sulphuric acid, however, gives ammonia and tungstic acids.
Chlorine may also be obtained by the action of dilute sulphuric acid on bleaching powder.
Chlorine is used commercially for the extraction of gold and for the manufacture of "bleaching powder" and of chlorates.
The commercial acid is usually yellow in colour and contains many impurities, such as traces of arsenic, sulphuric acid, chlorine, ferric chloride and sulphurous acid; but these do not interfere with its application to the preparation of bleaching powder, in which it is chiefly consumed.
One of the most important derivatives of hypochlorous acid is bleaching powder.
The return of the emperor in 1815 determined him to quit France, and he spent the close of his life with his younger son, Eleuthere Irenee (1771-1834), who had established a powder manufactory in Delaware.
The plate was now carefully heated over charcoal fire, fresh amalgam being added, as the powder fused, upon any defective places.
When the powder had become thoroughly liquid, so as to fill all the lines, the plate was allowed to cool, and the whole surface was scraped, so as to remove the superfluous niello, leaving only what had sunk into and filled up the engraved pattern.
Our knowledge of the explosion of ordinary black powder was also greatly added to by him, and in conjunction with Sir Andrew Noble he carried out one of the most complete inquiries on record into its behaviour when fired.
Among the manufactures are zinc spelter-there are large smelters here-clay products (chiefly vitrified brick, sewer pipe and tile; the clay being obtained from a great underlying bed of shale), blasting powder, packinghouse products and planing-mill products.
He adds that the tendency is to replace those by " the hair, without powder, simply curled."
He also made many experiments with the tourmaline when cut into thin slices, and reduced to the finest powder, in which state each particle preserved its pyro-electricity; and he showed that scolezite and mesolite, even when deprived of their water of crystallization and reduced to powder, retain their property of becoming electrical by heat.
When this white powder is heated and stirred about by any substance whatever, it collects in masses like new-fallen snow, and adheres to the body with which it is stirred.
He discovered that they had the power of affecting the electric conductivity of materials when in a state of powder, the majority of metallic filings increasing in conductivity.
A hydrated cuprous oxide, (4Cu 2 O, H 2 0), is obtained as a bright yellow powder, when cuprous chloride is treated with potash or soda.
Cupric oxide, CuO, occurs in nature as the mineral melaconite (q.v.), and can be obtained as a hygroscopic black powder by the gentle ignition of copper nitrate, carbonate or hydroxide; also by heating the hydroxide.
Copper dioxide, CuO 2 H 2 O, is obtained as a yellowish-brown powder, by treating cupric hydrate with hydrogen peroxide.
It dissolves in the excess of acid, and is precipitated as a white crystalline powder on the addition of water.
It is a brown deliquescent powder, which rapidly forms the green hydrated salt CuC1 21 2H 2 0 on exposure.
Cuprous iodide, Cu 2 l 21 is obtained as a white powder, which suffers little alteration on exposure, by the direct union of its components or by mixing solutions of cuprous chloride in hydrochloric acid and potassium iodide; or, with liberation of iodine, by adding potassium iodide to a cupric salt.
Cuprous sulphite, CuS0 3 H 2 O, is obtained as a brownish-red crystalline powder by treating cuprous hydrate with sulphurous acid.
A maroon-coloured powder, of composition CuN02, is formed when pure dry nitrogen dioxide is passed over finelydivided copper at 25 0 -30 0.
The tannin of oak, C/9H16010, which is found, mixed with gallic acid, ellagic acid and quercite, in oak bark, is a red powder; its aqueous solution is coloured dark blue by ferric chloride, and boiling with dilute sulphuric acid gives oak red or phlobaphene.
The former generally consists of a hard and compact mass of rounded, scratched and sometimes polished stones firmly embedded in a powder of crushed rock.
The latter is less compact and contains angular boulders, often of a considerable size, but no powder.
By the action -of bleaching powder it is converted into chlorpicrin, CC1 3 NO 2.
The more important picric powders are melinite, believed to be a mixture of fused picric acid and gun-cotton; lyddite, the British service explosive, and shimose, the Japanese powder, both supposed to be identical with the original melinite; Brugere's powder, a mixture of 54 parts of ammonium picrate and 45 parts of saltpetre; Designolle's powder, composed of potassium picrate, saltpetre and charcoal; and emmensite, invented by Stephen Emmens, of the United States.
Barium hydroxide, Ba(OH) 2, is a white powder that can be obtained by slaking the monoxide with the requisite quantity of water, but it is usually made on the large scale by heating heavy spar with small coal whereby a crude barium sulphide is obtained.
It is a white powder moderately soluble in cold water, readily soluble in hot water, the solution possessing an alkaline reaction and absorbing carbon dioxide readily.
It is a grey coloured powder which is readily decomposed by dilute acids with the production of hydrogen peroxide.
It is a white powder which is readily decomposed by water with the formation of the hydroxide and hydrosulphide.
Barium carbonate, BaCO 31 occurs rather widely distributed as witherite, and may be prepared by the addition of barium chloride to a hot solution of ammonium carbonate, when it is precipitated as a dense white powder of specific gravity 4.3; almost insoluble in water.
The commonest are senna in the form of compound liquorice powder, sulphur in the form of lozenges, cascara sagrada, either in tablets or in the form of liquid or dry extract, rhubarb, colocynth and especially aloes.
It has two Evangelical churches (among them that of St Mary, dating from 13th century), two ancient gateways, a powder tower and a gymnasium.
It is a white powder, almost insoluble in water, and when volatilized, condenses in two crystalline forms, either octahedral or prismatic. It is insoluble in sulphuric and nitric acids, but is readily soluble in hydrochloric and tartaric acids and in solutions of the caustic alkalies.
It is a nonvolatile white powder, and has a specific gravity of 6.6952; it is insoluble in water and almost so in acids - concentrated hydrochloric acid dissolving a small quantity.
It is a pale yellow powder (of specific gravity 6.5), which on being heated strongly gives up oxygen and forms the tetroxide.
It is a white powder almost insoluble in water and nitric acid, and when heated, is first converted into metantimonic acid, HSbO 3, and then into the pentoxide Sb205.
It is a white powder almost insoluble in water.
It is soluble in alcohol and in carbon bisulphide, and also in a small quantity of water; but with an excess of water it gives a precipitate of various oxychlorides, known as powder of algaroth.
It is a white powder insoluble in water, alcohol and ether.
It forms a fine dark orange powder, insoluble in water, but readily soluble in aqueous solutions of the caustic alkalis and alkaline carbonates.
Attempts to get a pure toxin by repeated precipitation and solution have resulted in the production of a whitish amorphous powder with highly toxic properties.
Such a powder gives a proteid reaction, and is no doubt largely composed of albumoses, hence the name toxalbumoses has been applied.
The bark has been employed for dyeing yellow and for tanning, and was formerly in popular repute as a febrifuge and tonic. The powder of the dried nuts was at one time prescribed as a sternutatory (to encourage sneezing) in the Edinburgh Pharmacopoeia.
Duxbury has a public library, and is the seat of the Powder Point school for boys, and Partridge Academy, founded in 1828 by a bequest of $io,000 from George Partridge of Duxbury, and incorporated in 1830.
Under the name of anti-opium cure various remedies containing morphine in the form of powder, or of little pills, have been introduced, as well as the subcutaneous injection of the alkaloid, so that the use of morphine is increasing in China to an alarming extent, and considerable difficulty is experienced in controlling the illicit traffic in it, especially that sent through the post.
A Dover's powder, also, is hardly to be surpassed in the early stages of a bad cold in the head or bronchitis.
When crystallized, however, haematite often presents a dark colour, even iron-black; but on scratching the surface, the powder of the streak shows the colour of dried blood.
Molecular silver is a grey powder obtained by leaving metallic zinc in contact with silver chloride which has been precipitated in the cold and washed till nearly free from acid.
The silver in this case is obtained as a yellowish grey heavy powder, which is easily washed by decantation; but it' tends to retain unreduced chloride, which can be removed only by fusion with carbonate of soda.
It is obtained as a light yellow powder by dissolving the metal in hydriodic acid, or by precipitating a silver salt with a soluble iodide.
It forms with silver nitrate the yellowish green solid, Ag 2 S AgNO 3, and with silver sulphate the orange-red powder, Ag 2 S Ag 2 SO 4 Silver sulphate, Ag 2 SO 4, is obtained as white crystals, sparingly soluble in water, by dissolving the metal in strong sulphuric acid, sulphur dioxide being evolved, or by adding strong sulphuric acid to a solution of the nitrate.
Fulminating silver is an extremely explosive black powder, first obtained in 1788 by Berthelot, who acted with ammonia on silver oxide (prepared by adding lime water to a silver solution).
Another method consists in mixing the powdered bark with milk of lime, drying the mass slowly with frequent stirring, exhausting the powder with boiling alcohol, removing the excess of alcohol by distillation, adding sufficient dilute sulphuric acid to dissolve the alkaloid and throw down colouring matter and traces of lime, &c., filtering, and allowing the neutralized liquid to deposit crystals.
It occurs in a colourless crystalline powder, having the formula C20H24N202.2HC1.3H20.
It is a white powder which readily dissolves in water to form the hydroxide, LiOH, which is also obtained by boiling the carbonate with milk of lime.
It is a dark red microcrystalline powder, insoluble in carbon bisulphide, oil of turpentine, &c., and having a density of 2.2.
By passing the products of the decomposition of calcium phosphide with water over granular calcium chloride, the P 2 H 4 gives a new hydride, P1.2H6 and phosphine, the former being an odourless, canary-yellow, amorphous powder.
On the opposite bank stands the picturesque hamlet of Obilichevo, with a large powder factory.
The Celetna ulice, which leads from the town hall to the limits of the old town contains at its extremity the so-called powder tower (prasna brcina).
The chief tributaries of the Snake river in Oregon are the Grand Ronde, Powder, Burnt, Malheur and Owyhee rivers.
Bleaching powder oxidizes it to chlorcarbostyril.
The perfectly pure metal may be prepared by heating the oxide or oxalate in a current of hydrogen; when obtained at a low temperature it is a black powder which oxidizes in air with incandescence; produced at higher temperatures the metal is not pyrophoric. Peligot obtained it as minute tetragonal octahedra and cubes by reducing ferrous chloride in hydrogen.
Ferrous oxide is obtained when ferric oxide is reduced in hydrogen at 300 as a black pyrophoric powder.
It may also be prepared as a black velvety powder which readily takes up oxygen from the air by adding ferrous oxalate to boiling caustic potash.
Ferrous hydrate, Fe(OH)2, when prepared from a pure ferrous salt and caustic soda or potash free from air, is a white powder which may be preserved in an atmosphere of hydrogen.
Ferric oxide or iron sesquioxide, Fe203, constitutes the valuable ores red haematite and specular iron; the minerals brown haematite or limonite, and gothite and also iron rust are hydrated forms. It is obtained as a steel-grey crystalline powder by igniting the oxide or any ferric salt containing a volatile acid.
When finely ground these crystals yield a brownish red powder which dissolves slowly in acids, the most effective solvent being a boiling mixture of 8 parts of sulphuric acid and 3 of water.
By heating solutions of certain iron salts for some time and then adding a little sulphuric acid it is precipitated as a brown powder.
Barium ferrate, BaFeO4H20, obtained as a dark red powder by adding barium chloride to a solution of potassium ferrate, is fairly stable.
Ferrum redactum, reduced iron, a powder containing at least 75% of metallic iron and a variable amount of oxide.
The carbonate forms about one-third and is mixed with sugar into a greyish powder.
Carniferrin is another tasteless powder containing iron in combination with the phosphocarnic acid of muscle preparations, and contains 35% of iron.
Sicco, the name given to dry haematogen, is a tasteless powder.
Such ferns as Gymnogrammas, which have their surface covered with golden or silver powder, and certain species of scalysurfaced Cheilanthes and Nothochlaena, as they cannot bear to have their fronds wetted, should never be syringed; but most other ferns may have a moderate sprinkling occasionally (not necessarily daily) and as the season advances sufficient air and light must be admitted.
Arms and powder are also imported.
It is a grey powder which is insoluble in water, but dissolves in acids to give a lavenderblue solution which possesses strong reducing properties.
It forms a black amorphous powder or a dark green crystalline mass, and is insoluble in water and in most acids.
Pyrovanadic acid is deposited as a dark brown unstable powder when an acid vanadate is decomposed by nitric acid.
Gain (Comptes rendus, 1906, 1 43, p. 823) by calcining ammonium metavanadate and saturating a solution of the resulting oxides with sulphur dioxide; the resulting blue solution (from which a sulphate of composition 2V 2 0 4.3S0 2.10H 2 O can be isolated) is then boiled with water, when sulphur dioxide is liberated and a pale red crystalline powder of hypovanadic acid, H4V205, is precipitated.
It is brittle, and when hammered readily breaks up into a powder of angular grains.
But on the 26th of May the Venetians were forced to abandon Fort Malghera, half-way between the city and the mainland; food was becoming scarce, on the 19th of June the powder magazine blew up, and in July cholera broke out.
Arsenic phosphide, AsP, results when phosphine is passed into arsenic trichloride, being precipitated as a red-brown powder.
The numerous small lakes in the city (there are about 200 lakes in Hennepin county) have been incorporated in the park system; among them are Lake Harriet (353 acres; in Lake Harriet Park), Lake Calhoun (on which are extensive public baths), Lake Amelia (295 acres), Lake of the Isles (loo acres), Cedar Lake, Powder Horn Lake (in the park of that name) and Sandy Lake (in Columbia Park).
They live frugally, and are only prodigal in powder and human life.
The spark was put to the powder by the action of the war minister, General Linares, in proposing to organize a new field force by calling out the Catalan reserves.
In 1775 Revere was sent by the Massachusetts provincial congress to Philadelphia to study the working of the only powder mill in the colonies, and although he was allowed only to pass through the building, obtained sufficient information to enable him to set up a powder mill at Canton.
Gattermann (Berichte, 1890, 23, 1226) has also prepared it by the decomposition of a solution of phenyldiazonium sulphate with alcohol and copper powder.
If any rock be taken (even a piece of pure quartz) and crushed to a very fine powder, it will show some of the peculiarities of clays; for example, it will be plastic, retentive of moisture, impermeable to water, and will shrink to some extent if the moist mass be kneaded, and then allowed to dry.
The compound powder is a useless preparation, as the starch it contains is very liable to ferment.
In most cases, however, the latter tendency is guarded against, in making up the paste for moulding, by adding to the fresh clay a certain proportion of burnt material of the same kind, such as old bricks or potsherds, ground to a coarse powder.
The ore in fine powder is fed in at the top, through a hopper, in a regular thin stream, by a pair of rollers, and in falling lodges on the flats of the bars, forming a talus upon each of the height corresponding to the angle of rest of the material, which is, however, at short intervals removed to lower levels by the arrival of fresh ore from above.
First try the easy methods then progress to the gentle abrasive powder bleach, or mild cream abrasive you use to develop the sheen.
Aluminum box section extrusion with milled top and base, electrostatically powder coated and baked with polyester acrylic paint.
Additionally, moisture sorption can lead to particle agglomeration and powder caking.
Use a coffee grinder to grind the star anise to a powder.
The seeds are crushed into a powder and there is no known antidote for the fatal solution.
There are runs to suit everyone from the nervous beginner to the powder hound.
Phase 1 trials have confirmed the fast speed of onset and vastly improved bioavailability of apomorphine nasal powder compared with Uprima 3mg.
Instead of your usual powder blusher, try a creamy or water-based tint for a sheer swish of color.
My usual, the Marigold vegetable bouillon powder, is pulled out here.
Ideal for making chocolate brownies with our Equal Exchange Cocoa Powder - delicious!
Do not use bubble baths, oils, soaps or talcum powder for seven days. After washing dry the wound thoroughly.
The powder from which tantalum capacitors are made is of pure tantalum metal, with a typical particle size of 10µm.
Home Tungsten products Tungsten carbide Powder Tungsten Carbide Powder Tungsten carbide powder is the intermediate in the line from W powder to cemented carbides.
Due to its high melting point, silicon carbide can only be processed in powder form.
The use of inverse phase gas chromatography to study the glass transition temperature of a powder surface.
The product is then powder coated to a choice of RAL colors in the standard range.
The carriers are finished in tough epoxy powder coating, except for the stainless carriers, which are hand-polished.
Fully finished in a durable powder coating the flight is designed to blend in well with all room settings.
General characteristics The blue poison dart frog ranges from light powder blue to deep cobalt in color.
Some shapes are more prone to defects as a result of the stresses encountered in the powder compaction process.
Next was a large bin full of powder which would be sprinkled on the suit to dry up any chemical contaminant.
The Phenix is a unique closed cycle helium cryostat specifically designed for powder diffraction.
Which is the best washing machine detergent to use - washing powder, liquid or tablets?
An all purpose, heavy-duty powder detergent does a good job of cleaning most clothes and is suitable for all washable fabrics.
Users may also submit their own powder diffraction data.
Fittings shall be protected internally with a red powder epoxy resin electrostatically applied to a average thickness of 150 microns.
You can also add grated ginger, cinnamon powder, rice syrup or vanilla essence for extra flavor.
If ethanol vapor is passed over heated aluminum oxide powder, the ethanol is essentially cracked to give ethene and water vapor.
Carbon dioxide or dry powder extinguishers should be used for ether fires.
Color Taming To soften a blusher that's too bright, top with loose face powder like Blended Face Powder & Brush.
HealthAid fenugreek is a standardized extract of 200mg with 400mg of raw fenugreek powder.
They filled the arrow shaft 3/4 full with Black powder, dropped in the lit firecracker and ran for cover.
Small fires can be attacked with dry powder fire extinguishers.
He had fogotten to remove his powder flask from his pocket.
Sick officials from the Fish and Game Department poured 16,000 gallons of liquid and 60,000 pounds of powder into Lake Davis.
Strip away the foundation powder designer garb, big mouth bravado and delve behind closed doors - and what will we find?
The dose is 1 or more cloves of raw garlic per day, or up to a teaspoon of garlic powder.
This is a 100% cotton hammock with added comfort spreader bars complete with stable easy to erect powder coated steel stand.
In addition, the powder from dried laurel leaves is good for stopping hemorrhage from the nose.
Word spread about the health benefits of the wild rose hips and Hansen began selling the powder to people all over Denmark.
A good combo is wash using hydrogen peroxide - this will kill off anything on the surface, then sprinkle with antibiotic powder.
Other dry powder inhalers will have the medication either in disks or in the device itself.
Lessons to be learned In some ways the action research ignited a powder keg that had been waiting to go off.
The Middle East conflict has long been recognized as a potential powder keg.
Secondly, you also asked the very good question about what can be done about the Balkan powder keg?
The man in the background is holding a Copper ladle for introducing the powder [1860s] .
Hindu weddings are often lavish affairs, the bride has had her skin rubbed with turmeric powder, this gives it a glowing quality.
Sift flour into bowl and add margarine, sugars and baking powder.
This major annual event for the international powder metallurgy community will take place in the historic city of Ghent, Belgium.
Interest in the technology of titanium powder metallurgy components has been expressed by a number of PowdermatriX member companies.
We use no binders or fillers so the capsules are 100% pure finely milled graviola powder.
The top rose hip powder contains only a few milligrams of vitamin C per ounce.
Sift in the flour and baking powder, then gently fold into the eggs before adding to the nut and spice mixture.
Polypropylene can be made auxetic by compacting ultra high molecular weight PP powder, with a particle size of 30 to 120 microns.
He requested some arms and was given three old muskets and a barrel of powder.
High resolution at low Q is handy for indexing, and is essential for tackling moderately complex magnetic structures with powder neutron data.
The Powder Magazine was located in the far northwestern corner of the study area, approached by rail lines.
Nutmeg powder (organic) nutmeg powder (organic) Nutmeg is an underused spice with a distinctive pungent fragrance and.. .
Remove from the heat and stir in the flour, baking powder and rolled oats.
When removed, apply antiseptic ointment or powder but monitor daily for contamination or insect infestation.
Women's Powder pant Aquafoil® pants with a warp knit lining provide excellent warmth and breathability.
Aspirin Cufflinks Perfect also for television playboys to slip fizzy knockout powder into an archenemy's drink while badly disguised as a waiter... .
You could also try this recipe with oily fish like salmon or tuna, with a little more curry powder to spice things up.